29969641 has 4 divisors (see below), whose sum is σ = 32275012. Its totient is φ = 27664272.

The previous prime is 29969633. The next prime is 29969663. The reversal of 29969641 is 14696992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10916416 + 19053225 = 3304^2 + 4365^2 .

It is a cyclic number.

It is not a de Polignac number, because 29969641 - 2³ = 29969633 is a prime.

It is a super-3 number, since 3×29969641³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29969591 and 29969600.

It is not an unprimeable number, because it can be changed into a prime (29969671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152666 + ... + 1152691.

It is an arithmetic number, because the mean of its divisors is an integer number (8068753).

Almost surely, 2^29969641 is an apocalyptic number.

It is an amenable number.

29969641 is a deficient number, since it is larger than the sum of its proper divisors (2305371).

29969641 is a wasteful number, since it uses less digits than its factorization.

29969641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305370.

The product of its digits is 209952, while the sum is 46.

The square root of 29969641 is about 5474.4534887055. The cubic root of 29969641 is about 310.6184013621.

The spelling of 29969641 in words is "twenty-nine million, nine hundred sixty-nine thousand, six hundred forty-one".